Metal window



May 12, 1931. F. KULLMER 1,804,787

I METAL WINDOW Filed June 19. 1929 f Y f v 7/// 1//// f F16.. f

10 3 INVENTOR. a

y FRANK( Kalf. MER

Bx )W2 \n l ATTORNEYS.

l Patented May' l2, 1931v l' i yUNH-:o STATES PATENT OFFICE FRANKKULLMER, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR, BY MSNE ASSIGN- MENTS,TO SOUL STEEL COMPANY, 0F SAN FRANCISCO, CALIFORNIA, A CORPORA- TION 0FCALIFORNIA METAL' WINDOW v Application mea June-1e,

This invention has to. do with metal windows and has for its objects animproved airtight seal for metal Windows of the hinged or swingingvariety.

Briefly described the invention comprises a combination of metal windowmembers wherein the sash seats with a\metal to metal contact when swungto closed position and at the same time one edge of the sash is sealedair-tight or rather draught-tight against a resilient pad extendingentirely` around the frame. The chief:l points on which patentabilityare predicated is the metal to metal posltive closing limits of the sashplus the resilient seal which does not affect the closing limits, alsothe specific arrangement of the seal in relation to the sealing edge ofthe swinging sash. t

In the drawings Fig. l is a horizontal cross section of a portion of ametal window showing one run of the fixed frame and swinging sash only,andwiththe sash closed upon the sealing strip and likewise in metal ytometal contact with the'frame.

Fig. 2 is a view similar to that of Fig. l showing a slight modificationin the fixed frame construction.

Fig. 3 is a broken section showing a portion of Fig. 2 with the sashslightly opened.

In further detail the xed frame is designated l, and the building towhich it is per- Imanently secured 2, here shown'of concrete though itmay be of any construction. The fixed frame is of modified L sectionwith the long leg 3 of the L extending inwardly or toward the oppositeside of the window opening 4 adjacent the inner side of the buildingwall, and a relativel short leg 5 at the outerside of the buil ing wallextending in the same direction as the long leg 3, and both inwardlyprojecting le s of the fixed frame arranged for seating t ereagainstof'two similar though outwardly projecting legs 6, 7 of the sash frame8, the

long leg 7 of the sash being to the outersidel of the building Wall soas to overlap the shorter leg 5 of the xed frame and the shorter leg 6of the sash at the inner side of' the sash to overlap the longer leg 3of the,

fixed frame.

1929. serial No. 372,'194.

as to swing open in direction of the small arrows.

To seal -the sash when in closed position I provide an undercut recess10 in the outer side of the long leg 3 of the xed frame in which isseated a strip of' soft felt 11.

This 'eltjnormally projects as shown in Fig. 3 of the drawing and ispositioned relatively to the short leg 6 of the sash so as to bepartially overlapped therebywhen thc sash is closed, as shown in Figs. land 2 and when thus partially overlapped it does two things, i. e.compresses the felt immediately under it, and at the saine time forcesthe protruding portion of the felt in a lateral direction, with a resultthat it e'ectually seals the leg 6 at two places, along the inner vsideand also along the outer edge of the leg, and it is this constructionwhich I'deem of particular advantage for it avoids crushing the feltdirectly into a recess to'destroy its elasticity yet seals along twoangularly disposed surfaces of the sash to prevent in. gress of draughtsand at the same time forms no obstruction to the free seating of themetal legs or flanges 6 and 7 of thesash directly against the metal legsor flanges 3 and 5 of the fixed frame'and hence preserves the relationof any, fastening catches or clamps as usually provided on such metalwindows.

The difference between the constructions of Fig. l and Fig. 2 is that inFig. l the long leg or flange 3 of the xed frame is made separable alongthe line 12 and secured with screws or otherwise. .This per- .mitseasier rollin of the shape, though the groove may be placed on eitherWindow member at any other contacting portion, but I chose the positionand. arrangement shown as best to protect the felt from the action ofthe elements.

It is also obvious that any-other resilient material or a rubber hosemay be used in the groove in place offelt if desired, the chiefrequirements being that the material chosen shall be both compressibleas Well as laterally deflcctable so as to`seal along the tWo `edges ofthe sash member continuously p around the same as described.

partially I claim: y

1. Metal Window construction comprising a iXed frame and a swingingsash, the sash arranged With a portion to overlap and seat against theiXed frame when the sash is closed, and a strip of resilient sealingmaterial mounted on and projecting outward from the iiXed frame in aposition to be overlapped and engaged by the extreme edge of thesashWhen closed and be ldeflected laterally away from said edge.

Metal Window construction comprising a iixed frame and a swinging sash,the sash arranged with a portion to overlap and seat against the fixedframe when the sash is closed7 and a strip oi resilient sealing materialmounted on and projecting outward from the ixed frame in a position tobe partially overlapped and engaged by the extreme edge of the sash whenclosed and be deiected laterally away from said edge, said .strip ofsealing material carried in an undercut groove in the fixed frame toovercome dislodgment when deflected laterally as stated.

3. A metal shape for Window construction4 comprising a substantiallyL-shaped body with an undercut groove formed on a contact face adaptedto prevent displacenient of a strip of sealing material from the groovewhen deilected laterally.

4. A metal shape for Window construction comprising a substantiallyLshaped body, a groove formed in the inner face of its short leg andsaid short leg made separable along one side of the groove.

FRANK KULLMER.

